Page 225 - Invited Paper Session (IPS) - Volume 1

IPS142 Jorge L. V. V. et al.
With this information our users will have at their disposal more information
available that will be useful to understand better the benefits of supporting the
census information with administrative registers.

5. The Housing Census
The Housing Census consists, first of all, in an exhaustive quantification of
all the dwellings (occupied and unoccupied), and secondly in a
characterization of them and of the building where they are allocated.
Analogously to what has been mentioned with the Population Census, it is
planned to build an exhaustive microdata Housing file that contains all the
dwellings and their characteristics, using the administrative sources available.
Likewise Padron is the main source of information for the Population
Census, we could say that Cadastre will be the main source of data for the
Housing Census. It has the great advantage that contains a unique identifier
for all dwellings (cadastral reference) and that all the information is
georeferenced. On the other hand, the fact that it is used for tax purposes at
municipal level, has as one of the main consequences that the quality of the
information stored is very high.
One of the main drawbacks of Cadastre is that it is not linked to the
Population Register, so in some cases we do not know which household of
Padrón corresponds to each housing unit of Cadastre (anyway some tests have
been done with some provinces and the results seem to be quite encouraging).
On the other hand, Cadastre contains information on certain census variables
like period of construction or useful floor space, but not all, as for example the
variable tenure status of households.
During the following months an intense job of data-linkage between
sources will be done, but not any fieldwork operation is foreseen. In the end,
it should be available an integrated system where people from the Population
Census are assigned to housing units that belong to the Housing Census. The
coherence between both products should not have any cracks.
In the same way as in the section of the population census, the situation
for one of the most complicated variables of the next Housing Census is
presented here schematically.
Tenure status of households
Method and sources: The main data sources are Tax Agency and Cadastre.
In the Tax Agency all the declarants (around 65% of households) include the
cadastral reference of their usual residence and also any other properties they
own. On the other hand, Cadastre also contains information about the
ownership of each housing unit.
General issues: Due to the fact that the proposed data sources are not totally
exhaustive, it is necessary to carry out some imputation mechanism based on a
survey. In addition, it is also pending to include certain improvements (for

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